Wyniki wyszukiwania

1

Antioxidant activity of gallocatechin gallate and epigallocatechin gallate

100%

Muzolf-Panek M., Gliszczynska-Swigło A., Szymusiak H., Tyrakowska B.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

2

In vitro effects of prolonged exposure to quercetin and epigallocatechin gallate of the peripheral blood mononuclear cell membrane

75%

Margina D., Ilie M., Manda G., Neagoe I., Danciulescu-Miulescu R., Purdel C. N., Gradinaru D.

Cellular and Molecular Biology Letters

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2014

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tom 19

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nr 4

The study aimed to assess biophysical changes that take place in the peripheral blood mononuclear cell (PBMC) membranes when exposed in vitro to 10 μM quercetin or epigallocatechin gallate (EGCG) for 24 and 48 h. PBMCs isolated from hypercholesterolemia patients were compared to those from normocholesterolemia subjects. The membrane fluidity and transmembrane potential were evaluated and the results were correlated with biochemical parameters relevant to oxidative stress, assessed in the patients’ plasma. The baseline value of PBMC membrane anisotropy for the hypercholesterolemia patients was lower than that of the control group. These results correlated with the plasma levels of advanced glycation end products, which were significantly higher in the hypercholesterolemia group, and the total plasma antioxidant status, which was significantly higher in normocholesterolemia subjects. In the case of normocholesterolemia cells in vitro, polyphenols induced a decrease in membrane anisotropy (7.25–11.88% at 24 h, 1.82–2.26% at 48 h) and a hyperpolarizing effect (8.30–8.90% at 24 h and 4.58–13.00% at 48 h). The same effect was induced in hypercholesterolemia cells, but only after 48 h exposure to the polyphenols: the decrease in membrane anisotropy was 5.70% for quercetin and 2.33% for EGCG. After 48 h of in vitro incubation with the polyphenols, PBMCs isolated from hypercholesterolemia patients exhibited the effects that had been registered in cells from normocholesterolemia subjects after 24 h exposure. These results outlined the beneficial action of the studied polyphenols, quercetin and EGCG, as dietary supplements in normocholesterolemia and hypercholesterolemia patients.

3

Inhibitory effect of complement inactivation and epigallocatechin gallate on the human serum ability to induce cutaneous neovascular reaction in mice

75%

Skopinski P., Skopinska-Rozewska E., Sommer E., Chorostowska-Wynimko J., Demkow U., Rogala E., Filewska M.

Bulletin of the Veterinary Institute in Puławy

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2004

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tom 48

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nr 4

4

Lipid rafts mediate epigallocatechin-3-gallate- and green tea extract-dependent viability of human colon adenocarcinoma COLO 205 cells; clusterin affects lipid rafts-associated signaling pathways

51%

Pajak B., Kania E., Gajkowska B., Orzechowski A.

Journal of Physiology and Pharmacology

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2011

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tom 62

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nr 4

5

Contents of biologically active compounds in Rhodiola rosea roots during the vegetation period

51%

Buchwald W., Mscisz A., Krajewska-Patan A., Furmanowa M., Mielcarek S., Mrozikiewicz P. M.

Herba Polonica

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2006

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tom 52

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nr 4

Studies on the contents of phenylpropanoids, salidroside, tyrosol, epigallocatechin gallate and gallic acid in Rhodiola rosea roots during the vegetation period were carried out. Rosavin was the main compound of Rhodiola rosea roots. It was found that the time of harvest of roots had a significant effect on the contents of biologically active compounds.

6

Antioxidant activity of different kinds of commercially available teas – diversity and changes during storage

45%

Duda-Chodak A., Tarko T., Sroka P., Satora P.

Electronic Journal of Polish Agricultural Universities. Series Food Science and Technology

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2008

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tom 11

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nr 4

Ograniczanie wyników

Antioxidant activity of gallocatechin gallate and epigallocatechin gallate

In vitro effects of prolonged exposure to quercetin and epigallocatechin gallate of the peripheral blood mononuclear cell membrane

Inhibitory effect of complement inactivation and epigallocatechin gallate on the human serum ability to induce cutaneous neovascular reaction in mice

Lipid rafts mediate epigallocatechin-3-gallate- and green tea extract-dependent viability of human colon adenocarcinoma COLO 205 cells; clusterin affects lipid rafts-associated signaling pathways

Contents of biologically active compounds in Rhodiola rosea roots during the vegetation period

Antioxidant activity of different kinds of commercially available teas – diversity and changes during storage